def content_test(self, url, values):
"""Get content of url and test that each of items in `values` list is present."""
r = self.c.get(url)
self.assertEquals(r.status_code, 200)
for v in values:
self.assertTrue(v in r.content)

There is something not quite right if you are getting the same result after renaming the file to tests.py. How are you running the tests? Are you doing so from the command line or have you set up a custom run target using Eclipse? Please try it from the command line if you haven't already.